import java.util.ArrayList;

public class Main {
    public static void main(String[] args) {
        Integer a = 100;
        Integer b = 100;
        System.out.println(a==b);
        Integer c = 200;
        Integer d = 200;
        System.out.println(c);
        System.out.println(d);
        System.out.println(c==d);
        ArrayList<Integer> arrayList = new ArrayList<>();
    }
}
